Individual provider Active NPI

Katie M Kratz

  • Nurse Practitioner
  • Hartford, WI
National Provider Identifier
1437600400
Registry record updated Nov 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
7304 Issued in WI
Practice address
1640 E Sumner St
Hartford, WI 53027-2684
Phone
(262) 670-4000
NPI assigned
Oct 14, 2016
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 17, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 7304 WI Primary

Addresses

Primary practice location

1640 E Sumner St
Hartford, WI 53027-2684

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250

Other identifiers 1

IdentifierTypeStateIssuer
100062432MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address kkratz39762@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20161209001569 WI Practitioner - Nurse Practitioner 4880974724 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2016
Medicare assignment
May accept Medicare assignment
Group practices
Aamg Reach PLLCGroup PAC ID 5597133264, 52 clinicians

Practice addresses (Care Compare)

10400 75TH St
Kenosha, WI 53142-7884
Phone (262) 948-7000

Hospital & facility affiliations

  • Aurora Medical Ctr Washington County Hospital, Hartford, WI, CCN 520038

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
7304WIMDNurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Advanced Healthcare, Inc. CurrentSince Nov 14, 2016 Accepting new patients
Aurora Advanced Healthcare Inc CurrentSince Nov 14, 2016 Accepting new patients
Aamg Reach PLLC CurrentSince Sep 20, 2022 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Feb 25, 2024 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Feb 25, 2024 Accepting new patients

Locations

16985 W Bluemound Rd
Brookfield, WI 53005
Phone (262) 641-8400

3003 W Good Hope Rd
Glendale, WI 53209
Phone (414) 352-3100

1640 E Sumner St
Hartford, WI 53027
Phone (262) 670-4000

10400 75th St
Kenosha, WI 53142
Phone (262) 697-7000

N84W16889 Menomonee Ave
Menomonee Fls, WI 53051
Phone (262) 251-7500

12203 N Corporate Pkwy
Mequon, WI 53092
Phone (262) 387-8200

1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056

1284 N Summit Ave
Summit, WI 53066
Phone (262) 560-3700

3289 N Mayfair Rd
Wauwatosa, WI 53222
Phone (414) 771-7900

1110 Gateway Ct
West Bend, WI 53095
Phone (262) 306-6100

Interoperability endpoints

  • Direct secure messaging: kkratz39762@direct.myadvocateaurora.org

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1476403200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1437600400",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1640 E SUMNER ST",
            "city": "HARTFORD",
            "state": "WI",
            "postal_code": "530272684",
            "telephone_number": "262-670-4000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KRATZ",
        "first_name": "KATIE",
        "middle_name": "M",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2016-10-14",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "WI",
            "license": "7304",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100062432",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "kkratz39762@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1640 E Sumner St",
            "city": "Hartford",
            "state": "WI",
            "country_code": "US",
            "postal_code": "530272684",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "1640 E Sumner St",
            "city": "Hartford",
            "state": "WI",
            "country_code": "US",
            "postal_code": "530272684",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Hartford, WI

Sources for this page

Verify at the official NPI Registry.